If A={1,2,3,4,5,6,7,8},B={1,3,5,6,7,8,9} then n((AΔB)×(BΔA)) is equal to
If A=[023−4], kA=[03a2b24],then the values of k, a, b respectively are ______ .
If →a is a vector of magnitude 3 units, then ∣∣→a×^i∣∣2+∣∣→a×^j∣∣2+∣∣→a×^k∣∣2 is equal to